how to to get sum of column or row in numpy
np.sum([[0, 1], [0, 5]], axis=0)
#array([0, 6])
np.sum([[0, 1], [0, 5]], axis=1)
#array([1, 5])
how to to get sum of column or row in numpy
np.sum([[0, 1], [0, 5]], axis=0)
#array([0, 6])
np.sum([[0, 1], [0, 5]], axis=1)
#array([1, 5])
python how to sum columns of an array
# Example usage 1:
import numpy as np
numpy_array = np.array([[1, 2, 3, 4, 5],
[1, 2, 3, 4, 5],
[1, 2, 3, 4, 5]])
np.sum(numpy_array, axis=0)
--> array([ 3, 6, 9, 12, 15])
# Example usage 2 (without numpy):
array = [[1, 2, 3, 4, 5],
[1, 2, 3, 4, 5],
[1, 2, 3, 4, 5]]
[sum(x) for x in zip(*array)]
--> [3, 6, 9, 12, 15]
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